240a deutz smoking at idle

[Ox]

If it's possible to turn the injector pump while it's running, I think you'll find by advancing the timing it will solve quite a few problems.  We can't set these pumps to the older manual specs anymore.  The diesel fuel has changed.  My old '64 Oliver was to be set at 6° BTC, which it was when I rebuilt the engine.  It barely ran.  Popping, snorting, white smoke.  Ended up advancing the timing to 12° or 13° BTC by the guidance of a major pump rebuilder.  Now she runs and starts good.  Keep the nuts on your pump snug enough to turn with a prybar or something but not to spin free, if you know what I mean.

[millcreek40]

Going to give it a try tomorrow   Can't hurt to try

[ohiowoodchuck]

You will need to retard the timing to clear up your idle haze issue. If it was popping and cracking, then yes advance it.

[ohiowoodchuck]

If it's possible to turn the injector pump while it's running, I think you'll find by advancing the timing it will solve quite a few problems.  We can't set these pumps to the older manual specs anymore.  The diesel fuel has changed.  My old '64 Oliver was to be set at 6° BTC, which it was when I rebuilt the engine.  It barely ran.  Popping, snorting, white smoke.  Ended up advancing the timing to 12° or 13° BTC by the guidance of a major pump rebuilder.  Now she runs and starts good.  Keep the nuts on your pump snug enough to turn with a prybar or something but not to spin free, if you know what I mean.

That's when the fuel is getting there to late on the compression stroke, hence not enough fuel for a good burn. When they wet stack like that, there's so much fuel that it can't compress all of it so therefore the unburnt fuel blows out the exhaust.

[ohiowoodchuck]

I always like to find problem cylinders with a heat gun. A dead cylinder will always show a way colder temp than the rest. Another cause could be a hung open injector.

[jdatwood]

Did you ever resolve this issue? I have a 5 cylinder Deutz in my Tree Farmer that smokes too much. I'm going to replace the injectors and see what that does then go from there. I've already replaced the air filter. The temps of the jugs are pretty similar checking with a thermography camera. I replaced the worst one which was about 20 degrees cooler and fuel drooled right out of it on the test set. I've got doubts about the injectors doing much since the other cylinders were all pretty similar in temp but I'll at least have spares 🤘For what a shop quoted me to test mine I can buy new ones so may as well. Just curios what your problem ended up being? 

[logging pete]

I have had 3 of them, they all smoked more at an idle than liquid cooled engines I have had. They where all good motors, I wouldn't mess with it.

[jdatwood]

That's good to hear. It makes sense with that fan running all the time, especially in colder climates. I've heard it was more difficult to get them up to temp which I've found to be true. I've run it in 90 degree weather and it ran just right. I do keep the heads and oil cooler washed out thoroughly though.